My local stores sell them for 16.00 and 16.99 at a Replay sports and a PIAS. At PIAS it's cheaper then opto plastic.

If they were $20 a pop I'd never try any of their discs.

Their names suck though. You don't know what a disc is supposed to do unless you're a fanboy. "4" doesn't say anything about the discs flight; it would be nice if they said either understable or their flight rating or gave us SOME clue as to what the disc did just by looking at the name/stamp.